Image won't show in renders
Drag and drop, do you mean you drag and drop a picture from your file explorer to Blender's viewport? If I remember correctly it doesn't crate a mesh plane but an image empty, which can't be rendered.
If you want to import images as planes, use the addon conveniently named &quot;import images as planes&quot;. It is shiped with Blender, you just need to enable it in the preferences. Then use the penu File → Import → Images as planes. When navigating in Blender's file explorer, you can open the sidebar and play with the import options, like the shader used for import, as you wish.